Electrical Power System

The EPS design was driven by powering the 50W thruster module as well as the 24GHz communication system. The solar array provides up to 18W, and the energy is stored in 4x 18650 cells. Centralized power distribution and monitoring is implemented across 8 power domains.

EPS is broken up into 3 boards:

  • Generation board: measures solar panel voltages and currents, and converts panel voltage to bus voltage
  • Distribution board: provides power toggling and current monitoring for all power domains
  • Battery assembly: tracks battery state, balances cells, and controls battery heaters